K2-22b
K2-22b (also known as EPIC 201637175 b) is an exoplanet 801 ly from Earth, rapidly orbiting the red dwarf K2-22 with an orbital period of 9.145872 hours.[2] It has a mass of 0.02 ME and a radius below 0.71 ME.[3] The planet was not detected in the K2 photometry. K2 photometry reveals the presence of an anomalous light curve consistent with evaporation of dust from the planet. This dust forms a tail both ahead and behind the planet, similar to some comets in the Solar System.[1] The evaporation of this dust requires a low surface gravity from the host planet, implying it is a low mass, "Mars, Mercury, or even lunar sized bodies with surface gravities of 1/6 to 1/3 that of Earth are to be preferred."[1]
The survey in 2020 has failed to validate the existence of the planet, although did not claim it to be a false positive.[4]
The observation of planetary system in 2021 has failed to detect the planet itself, placing an upper limit of 0.71R🜨 on its size. With the observed mass loss rate, the probable planet mass is 0.02ME, and the planet will be gone in 21 million years in future.[3]
See also
- Astronomy portal
- List of exoplanet extremes
References
- ^ a b c Sanchis-Ojeda, R.; et al. (2015). "The K2-ESPRINT Project I: Discovery of the Disintegrating Rocky Planet K2-22b with a Cometary Head and Leading Tail". The Astrophysical Journal. 812 (2). 112. arXiv:1504.04379. Bibcode:2015ApJ...812..112S. doi:10.1088/0004-637X/812/2/112.
- ^ a b c d "K2-22 b CONFIRMED PLANET OVERVIEW PAGE". NASA Exoplanet Archive. Retrieved 2015-10-14.
- ^ a b c d Schlawin, Everett; Su, Kate Y. L.; Herter, Terry; Ridden-Harper, Andrew; Apai, Dániel (2021), "LBT Reveals Large Dust Particles and a High Mass-loss Rate for K2-22 B", The Astronomical Journal, 162 (2): 57, arXiv:2106.07648, Bibcode:2021AJ....162...57S, doi:10.3847/1538-3881/ac0b41, S2CID 235436223
- ^ Adams, Elisabeth R.; Jackson, Brian; Johnson, Samantha; Ciardi, David R.; Cochran, William D.; Endl, Michael; Everett, Mark E.; Furlan, Elise; Howell, Steve B.; Jayanthi, Prasanna; MacQueen, Phillip J.; Matson, Rachel A.; Partyka-Worley, Ciera; Schlieder, Joshua; Scott, Nicholas J.; Stanton, Sevio M.; Ziegler, Carl (2020), ULTRA SHORT PERIOD PLANETS IN K2 III: NEIGHBORS ARE COMMON WITH 12 NEW MULTI-PLANET SYSTEMS AND 26 NEWLY VALIDATED PLANETS IN CAMPAIGNS 0-8, 10, arXiv:2011.11698
- v
- t
- e
- « 20142016 »
Space probes |
|
---|---|
Space observatories |
|
- 2015 Kerala meteoroid
- 2015 Thailand bolide
- WT1190F impact
- Asteroid close approaches
- 2015 BP513
- (357439) 2004 BL86
- 2015 AZ43
- (523775) 2014 YB35
- 1566 Icarus
- 2015 HM10
- 2015 TC25
- 2015 TB145
- 2007 VE191
- (33342) 1998 WT24
- (85989) 1999 JD6
- 2015 SO2
- Aldebaran b
- evaporation of Gliese 436 b
- Gliese 1132 b
- HD 155233 b
- HD 164595 b
- HD 219134
- HIP 11915 b
- K2-3d
- K2-18b
- K2-22b
- K2-24b
- K2-24c
- KELT-4Ab
- Kepler-438b
- Kepler-440b
- Kepler-442b
- Kepler-444
- b
- c
- d
- e
- f
- Kepler-451b
- Kepler-452b
- Kepler-453b
- KOI-4878.01
- LkCa 15 b
- spectrum of 51 Pegasi b
- WASP-121b
- Wolf 1061c
- 2015 BP519
- US 708
- EGS-zs8-1 (announced)
- WISE J224607.57−052635.0
- 1SWASP J093010.78+533859.5
- ASASSN-15lh
- EGSY8p7
- Tabby's Star
- 541132 Leleākūhonua
- VFTS 352 contact binary
- GW150914 (first observation of gravitational waves)
- GW151226
- 15P/Finlay
- C/2014 Q2 (Lovejoy)
- 88P/Howell
- C/2014 Q1 (PanSTARRS)
- C/2015 G2 (MASTER)
- C/2013 US10 (Catalina)
- 67P/Churyumov–Gerasimenko
- 10P/Tempel
- Rosetta (orbiting comet 67P; Nov 2014 / Mar 2015)
- Dawn (Ceres orbit insertion; Mar 2015)
- MESSENGER (end of mission; Apr 2015)
- New Horizons (flyby of Pluto; Jul 2015)
- Akatsuki (Venus orbit insertion; Dec 2015)
- Outer space portal
- Category:2014 in outer space — Category:2015 in outer space — Category:2016 in outer space
This extrasolar-planet-related article is a stub. You can help Wikipedia by expanding it. |
- v
- t
- e